This paper introduces the Minimal Biorobotic Stealth Distance (MBSD), a novel quantitative metric to evaluate the bionic resemblance of biorobotic aircraft. Current technological limitations prevent dragonfly-inspired aircrafts from achieving optimal performance at biological scales. To address these challenges, we use the DDD-1 dragonfly-inspired aircraft, a hover-capable direct-drive aircraft, to explore the impact of the MBSD on aircraft design. Key contributions of this research include: (1) the establishment of the MBSD as a quantifiable and operable evaluation metric that influences aircraft design, integrating seamlessly with the overall design process and providing a new dimension for optimizing bionic aircraft, balancing mechanical attributes and bionic characteristics; (2) the creation and analysis of a typical aircraft in four directions: essential characteristics of the MBSD, its coupling relationship with existing performance metrics (Longest Hover Duration and Maximum Instantaneous Forward Flight Speed), multi-objective optimization, and application in a typical mission scenario; (3) the construction and validation of a full-system model for the direct-drive dragonfly-inspired aircraft, demonstrating the design model's effectiveness against existing aircraft data. Detailed calculations of the MBSD consider appearance similarity, dynamic similarity, and environmental similarity.

翻译：本文提出了最小仿生机器人隐身距离（MBSD），这是一种用于评估仿生机器人飞行器仿生相似度的新型定量指标。当前技术限制使得蜻蜓仿生飞行器难以在生物尺度上实现最佳性能。为应对这些挑战，我们采用DDD-1蜻蜓仿生飞行器（一种具备悬停能力的直驱飞行器）来探索MBSD对飞行器设计的影响。本研究的主要贡献包括：（1）建立MBSD作为可量化、可操作的评估指标，该指标影响飞行器设计，能无缝融入整体设计流程，并为优化仿生飞行器提供新维度，平衡机械属性与仿生特性；（2）从四个方向创建并分析典型飞行器：MBSD的基本特性、其与现有性能指标（最长悬停时间和最大瞬时前飞速度）的耦合关系、多目标优化，以及在典型任务场景中的应用；（3）构建并验证了直驱蜻蜓仿生飞行器的全系统模型，通过现有飞行器数据证明了设计模型的有效性。MBSD的详细计算综合考虑了外观相似性、动态相似性和环境相似性。